Bail ear for excavating buckets



Aug. 4, 1925.

W. J. MULLALLY BAIL EAR FOR EXCAVATING BUCKETS Filed July 1924 Patented Aug. 4, 1925.

UNITED STATES 1,548,375 PATENT. EEQE,

WALTER J. MULLALLY, OF CHICAGO HEIGHTS, ILLINOIS, ASSIGNOR TO AMERICAN MANGANESE STEEL COMPANY, OF CHICAGO, ILLINGIS, A CORPORATION OF MAINE.

BAIL EAR FOR EXCAVATING BUCKE'IS.

Application filed July 3,

To all whom it may concern:

Be it known that I, WALTER J. MULLALLY, a citizen of the United States, residing at Chicago Heights, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bail Ears for Excavating Buckets, of which the following is a specification.

This invention relates to the means em ployed for attaching the lifting and supporting bail of a dredging or excavating bucket, or the like, and has for its object to provide an improved means of sustaining the ear upon the bucket without dependence upon the rivets and without tendency to shear the rivets under the very heavy loads which devices of this kind are required to sustain.

The invention proceeds upon the principle of fitting the ear to the bucket, or equivalent structure, by means of converging lugs, shoulders, or the like, on the body of the bucket, between which are fitted the correspondingly tapered sides of the ear, the taper being so directed that the load upon the ear constantly wedges the ear toward a firm seating between the lugs and the taperseat provided'by the lugs being open in the direction of taper so as to avoid any arresting stop or shoulder that would defeat this function; and while rivets are employed for the purpose of resisting outward displacement of the ear bracket from the wall of the bucket. The riveting is so designed that it does not defeat the constant taper-seating of the bracket under the load which it bears, and preferably, these rivets are so related to the body of the bucket or the bracket that movement of the bracket to its firm seating between the lugs will not impose shearing load upon the rivets; in other words, the holes through which the rivets pass in one or the other of the two members which they connect, are elongated in the direction in which the bracket moves under its load. Preferably, the lugs between which the bracket seats are undercut, and the bracket is dovetailed to correspond therewith in order that the lugs may reinforce the bracket against outward displacement and the seating of the bracket may be made the more effective, but the results of the invention may be realized to a measurably advantageous degree by making the meeting faces of the ug bracket perpendicular 1924. Serial No. 723,858.

to the plane of the bracket, and relying on the rivets alone to resist outward displacement. In a construction in which asupporting bracket is constantly borne to a taper seating on the implement, under the load which it bears in service, rivets passing through the bracket and the wall of the implement serve a function in addition to that performed by the rivets, as heretofore used in constructions where the rivets alone are relied upon for holding the bail ear to the implement. In the present instance, stresses transmitted from the load-supporting bail would tend to buckle the bracket outward along its middle line if resisted by the lugs alone at the outer edges of the bracket; hence, the rivets perform the further function of maintaining the flat condition of the bearing plate of the bracket and preventing the edges of the bracket from drawing away from the converging faces of the lugs.

In the accompanying drawing- Figure l is a side elevation of a portion of an excavating bucket in which the improved bracket mounting is embodied.

Figure 2 is a detail View of the bracket mounting shown in Figure 1 on an enlarged scale, and with a portion of the bracket broken away to disclose the relation of the rivets to the body of the bucket.

Figure '8 is a transverse section through the bracket mounting of Figures 1 and 2; and

Figure 4 is a similar section through a bracket mounting of modified construction.

A represents the body of a bucket, dipper, or other like container used for dredging, excavating, or similar operations, and B represents the bracket secured thereto for attachment of the bail or other connection through means of which the bucket is lifted, such bail being connected with the bracket by passing a suitably fashioned end of the bail through the eye C of the integral ear D on the bracket, all of which is in accordance with common practice.

It has long been proposed to provide abutments, lugs, or the like, for assisting in holding brackets in place upon excavating members of the kind herein described, but

owing to the difliculty of developing accuracy in the fit or seating of said brackets, rivets have generally been the principal means of holding the bracket upon the body of the m m er, and these rivets have utilize the lugs for the additional accordingly been used in considerable numhere with corresponding cost for the rivets and for the labor of applying them, and this cost has been considerable, particularly when taking into account the necessity for removing the rivets and replacing them during the life of the bucket, in order to provide new brackets as their bail-receiving ears wear out. The present invention remedies this defect by constructing the bracket 13 with converging side faces E and by casting or otherwise providing upon the body lb of the bucket or other container similarly converging lugs F between which the converging jfflCCS E of the bracket B may be introduced, and by which a seatfor the bracket will be provided which enters more firmly into function the greater the load imposed upon the brackets. Moreover, the faces E may be beveled or clovetailed as well as inclined to the longitudinal axis of the bracket, and the lugs F may be correspondingly undercut so as to furtherinsure the firmness of the seat and purpose of resisting separation of the bracket from the body towhich it is attached. In order to prevent the bracket B dropping out of its seat between the lugs F, rivets are insertedthrough the plate of the bracket and through the wall of the bucket, but these rivets may be very much fewer in number than if the rivets alone were depended upon to hold the bracket upon the bucket; moreover, the rivets G are so related to the parts which they hold, or particularly to one of said parts, for instance, the wall of the bucket A, that they are subjected only to tension in resisting displacement of the bracket. That is to say, the holes-H in the wall A are elongated in the direction of the longitudinal axis of the bracket B so that as the bracket is drawn to a: firm seating under the load which it bears in use, tli.e rivets will slide in the member having the elongated openings, and will thus be relieved from shearing stresses.

According to Figure l, the meeting faces E" of the bracket, and those of the lugs F,

are normal or perpendicular to the plane of the bracket plate instead of inclined thereto, and the rivets G are alone relied upon to resist outward displacement of the 1 In combination with an excavating bucket or the like, lugs carried by the bucket, and. a bail bracket fitted between said lugs; said ball bracket and lugs meetmg through faces which conver e toward the loading point of the bail, and said luvs: PlOVlCllllg an open ended taper seat for t 1e bracket tree from obstruction to the movement of the bracket therein other than that provided by its converging faces.

2. The combination of an excavating member, lugsthereon constructed with con verging opposed faces, bracket member adapted to enter between said lugs and having correspondingly converging faces through which it seats. against the faces of the lugs, and rivets uniting said members; one of said members havingholes receiving the rivets, elongated. inthe direction of the longitudinal axis of the bracket.

3; The combination of an excavating;

member, lugs on; said excavating member having converging and undercut faces, a. bracket member constructed to enter between said lugs and having correspondingly and beveled 1 faces through which 1t seats against said lugs by-longiconverging tudinal movement relatively to the lugs, and rivets uniting said members, one of said members having holes through which it receives said rivets, elongated in the directifonof said seating movement. n

Signed at Chicago Heights, Illinois, this 9th day of June, 1924:. i n 7 J. MULLALLY.

WALTER 

